Glock Talk - View Single Post

GWG19 · 03-16-2012, 11:28

I have a M11. I have seen 22 LR uppers for it.
My question is if I manufacture a upper in say 5.7X28 do i need to send a letter in on it to run the new upper?
In my case the whole gun is registered. I am running a lage upper on it right now, which does not change the caliber.

03-16-2012, 11:28	#1
GWG19 Senior Member Join Date: Jan 2012 Location: Huntsville Al Posts: 277	Machine Gun ? I have a M11. I have seen 22 LR uppers for it. My question is if I manufacture a upper in say 5.7X28 do i need to send a letter in on it to run the new upper? In my case the whole gun is registered. I am running a lage upper on it right now, which does not change the caliber.